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Royal Society of Chemistry, Green Chemistry, 5(5), p. 602-605, 2003

DOI: 10.1039/b305400b

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Promoter effects in the polymerisation of a mixed hydrocarbon feed with silica-supported BF3

Journal article published in 2003 by C. R. Quinn, J. H. Clark, S. J. Tavener, K. Wilson ORCID
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

The activity of a silica-supported BF3–methanol solid acid catalyst in the cationic polymerisation of an industrial aromatic C9 feedstock has been investigated. Reuse has been achieved under continuous conditions. Titration of the catalyst acid sites with triethylphosphine oxide (TEPO) in conjunction with 31P MAS NMR shows the catalyst to have two types of acid sites. Further analysis with 2,6 di-tert-butyl-4-methylpyridine (DBMP) has revealed the majority of these acid sites to be Brønsted in nature. The role of α-methylstyrene in promoting resin polymerisation via chain transfer is proposed.